$ git clone -n https://src.fedoraproject.org/rpms/rust-parsec-client.git /var/lib/mock/f42-build-side-1-3584341-46893/root/chroot_tmpdir/scmroot/rust-parsec-client
Cloning into '/var/lib/mock/f42-build-side-1-3584341-46893/root/chroot_tmpdir/scmroot/rust-parsec-client'...
$ git fetch origin 78794973570b24542af47ada9e22b6255aa84dd1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-parsec-client
 * [new ref]         78794973570b24542af47ada9e22b6255aa84dd1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7879497 PARSEC is no longer being actively developed